[1] 56 APO, Field Hosp 303, New Delhi, India
[2] Armed Forces Med Coll, Div Oral & Maxillofacial Surg, Pune, Maharashtra, India
[3] Army Dent Ctr Res & Referral, Dept Oral & Maxillofacial Surg, New Delhi 10, India
[4] All India Inst Med Sci, Dept Oral & Maxillofacial Surg, New Delhi, India